Pump.



P. S. A. BIGKEL & F. C. PIERCE.

. PUMP.

APPLIUATION FILED JUNE 2o. 19m.

Patented J all. 24, 1911l P. SVA. BICKEL & F. C. PIERCE.

PUMP.

APPLIOATI'ON FILED JUNE 20. 1910.

' Patented Jau.' 24, 1911.

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PUMP.

APPLIOATION' FILED JUNE zo. 1910.

Patented .1311.24, '1911.

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PAUL S. A. BICKEL AND FRANK C. PIERCE, OF SHOSHONE, IDAHO.

Specification of Letters Patent.

PUMP.

Patented Jan. 24, 1911.

Application filed .Tune 20, 1910. Serial No. 567,815.

To all whom it may concern:

Be it known that we, PAUL S. A. Breiter. and FRANK C. PIERCE, citizens of the United States, and residents of Shoshone, in the county of Lincoln and State of Idaho, have invented a new and Improved Pump, o-f which the following is a full, clear, and exact description.

This invention relates to certain improvements in pumps, and more particularly to certain improvements in pneumatic pumps adapted for deep well pumping'.

Our improved pump operates from pneumatic pressure, and is double acting as well asdirect acting. The exhaust air is utilized in aiding in the lifting of the water column so that the full effect of the compressed air is obtained. Ve eliminate all driving or lifting pump rods operated from the surface, and control the action of the pump by a rotatable, rather than a reciprocatory 1nember. The improved form'of the water cylinder and plunger' valves allows for easy access in case of repair, and provides liberal passagew'ays for the water. As the column raised by the pump is a mixture of air and water, it is evident that there will be no water hammer at the end of the stroke, and thus greater efficiency is secured.

The invention consists in the combination and arrangement of parts hereinafter defined in the claims, and one form of which is hereinafter' described in detail.

Reference is to be had to the accompany ing drawings, forming a part of this speciication, in which similar characters of reference indicate corresponding parts in all the views, and in which- Figure 1 is a longitudinal section through the lower portion of' the stand pipe having our improved pump disposed therein; Figs. 2, 3, 4 and 5 are longitudinal sections of successive portions from the upper end to the lower end of the pump; Fig. (5 is a side elevation of the air cylinder and inlet and exhaust ports; and Figs. 7 and 8 are transverse sections on the lines 7-7 and 8 8 respectively, of Fig. 2.

In our improved construction we employ n a stand pipe 10, the lower portion of which constitutes a casing for inclosing the pump cylinder, the air cylinder and the connecting and operating mechanism. The air cylinder 11 is somewhat smaller than the stand pipe, or casing, and is arranged eccentrically in respect thereto, as is clearly illustrated in air cylinder is a piston 14 connected to a piston rod 15, extending through a stuffing ybox in the lower cylinder head 1G. The air cylinder is provided with ports 17 and 18 adjacent opposite ends thereof, which ports serve alternately as inlet and exhaust ports. Connected to each port is a casing 19, provided with a port registering with the port 17 in the cylinder wall, and provided with a port 20 communicating with the space between the pump cylinder and the casing 10. Extending lengthwise of the air cylinder is a hollow rotatable valve stem 21, closed by a partition 22 below the port 18, and connected to an air supply pipe 23 in alinement with said valve stem, and extending upwardly from above the port 17. Upposlte each port the valve stem is provided with a transverse passage 24 out of communication with the interior of the valve stem, but adapted to establish communication between the cylinder port and the valve easing port 20.

Opposite to each passage 24 the valve stem has a port 25 which may establish communication between the interior of the valve stem and the corresponding cylinder port. lVith the valve stem in the position indicated in Figs. 2, 7 and 8, air delivered through the pipe 23 and the valve stem cannot escape at the upper end of the cylinder as the upper port 25 will be closed, as indicated in Fig. 7, but the air can enter the cylinder at its lower end, as plainly indicated in Fig. 8. The air in the upper end of the cylinder may escape through the upper passage 24 to the exterior of the air cylinder, and into the stand pipe, and rise with the water column.

Upon the rotation of the valve stem approximately 90o the relative positions of theetwo pairs of ports 24 and 25 will be reversed, so that air may enter the upper end of the air cylinder, and escape from the lower end. The piston 14 preferably has a projection or head upon its upper end to prevent the piston passing the port 17 on the up-s-troke and its engages with a collar or stop 26 at its lower end to prevent` the piston from passing the port 18. rfhe valve stem extends downwardly from the lower valve casing, and fits within a'socket in a bracket. 27, within the casing, as is indicated at the lower portion of Fig. 3. Below the air cylinder the valve stem 21 has two outwardly-extending studs 28 and 29, spaced apart as indicated in Fig. 3. The piston rod 15 carries a bracket 30 terminating in a sleeve 31, slidable lengthwise of the valve stem 21, and presenting upper and lower cam edges for engagement with the two stud-s or pins 28 and 29. As the piston approaches its lowermost position the sleeve 31 engages with the stud 29 to rotate the valve stem to the position indicated in the drawings. This admits the air to the lower side of the piston 14 and raises the latter, so as to move the sleeve 31 upwardly along the valve stem. As the piston approaches the upper end of its stroke, the upper end of the sleeve engages with the upper pin 23, and causes t-he valve stem to rotate through approximately 9()O and reverses the positions of the two valves, and admits air into th-e upper end of -the cylinder. The valve control is thus entirely automatic, and the piston will continue to reciprocate so long as air is supplie-d through the pipe 23.

' 1t will be noted that this pipe is threaded into the upper casing 19, and is not directly attached to the stem 21. Thus, the rotation of the valve stem does not necessitate a corresponding rotation of th-e air supply pipe.

As previously stated, the pump cylinder 12 is directly in alinement with the air cylinder 11 and directly below the same, and the piston rod 15 extending out of the lower end of the air cylinder, projects into the upper enu of the water cylinder and is rigidly connected to the piston 32 in the latter. This piston is hollow and is form-ed of two separate heads 33 and 34, rigidly connected together. The connecting means illustrated includes a tubular member 35 of slightly smaller diameter than thel interior of the pump cylinder and having its opposite ends screwed into p-eripheral fianges on the two piston heads 33 and 34. A suitable ring 36 is secured on to each tubular member, so las to compr-ess a gasket. 37 and hold the same in position around the piston and adjacent the c-orrespondii'ig piston head. The outer casing 1() and the water cylind-er 13 are provided with registering openings constituting an inlet port 33, whereby the water outside of the casing 10 may enter the water cylinder 13, but cannot enter directly to the space between the cylinder 13 and the casing 10. The tubular member 35 which holds the piston -heads 33 and 34 rigid in respect to each other, is provided with a series of slots or openings 39, extending lengthwise thereof and permanently establishing communication between the interior of the piston and the port 3S.

The upper end of the wa-ter cylinder 13 is closed by a head 40, within which there are a plurality of ports 41, normally closed by a valve plate 42 pressed down againstthe upper surface of the head by a coil spring 43. The head is preferably provided with an upwardly-extending sleeve 44, vwhich serves as a guide for the piston rod 15 and carries a stop 45 for the spring 43, and a packing gland 4G around the piston rod. The extreme lower end of the pump cylinder 13 is constructed very similar to the upper end; that is, it is provided with an outwardly-opening valve 47 normally pressed against the outlets 48 in thehead by means of a coil spring 49. The two heads 33 and 34 of the piston are provided with outwardlyopening valves 50 and 51, respectively, and said valves are normally held lgainst ports 52 and 53 in the two heads by suitable coil springs 54 and 55. As the air piston 14 is reciprocated by the admission of air to the opposite ends of the air cylinder, the pump piston is likewise caused to reciprocate.

lith the parts in the position indicated in Figs. 2 to 5, inclusive, the piston is about to start on its upward stroke. rThe water within the pump cylinder, above the valve 50 in the head 33, is forced through the port 41, past the valve 42 intol the outer casing, while water enters the port 33 to the interior of the piston and thence through the port to the space in the cylinder 13 below the piston head 34, to lill the space left as thev piston ris-es. Upon the down stroke of the piston, the water beneath the piston head 34 is forced down through the ports 48, and water passes the valve 50 to fill the space above the piston head 33.

rEhe entire device is particularly adapted for deep well pumping, as the water is lifted by the action of the compressed air and the weight of the column lifted is reduced by the presence of the air in the water, as all of the air used to drive the pump is exhausted into the rising column of water. By means of our construction, we eliminate all driving and lifting pump rods operated from the surface, and stop and start the pump by the turning-off or on of the air supply at the upper end of the well. The form of the water cylinder and plunger is such that access may very readily be gained to the valves in case it is necessary to replace or repair them. All of the cylinder heads are readily removable from the cylinders, to permit access to be gained to the pistons, and the piston heads are removable to permit access to be gained to the pac-kings around the pistons, without removing the pistons from the cylinders. The air pump may be lubricated by a slight admission of water to the air cylinder, Y

either by an intentional leakage or by an aperture specially provided for the purpose.

Our improved pump is useful for surface pumping, as well as for deep well pumping, and various features of our invention may be used in other forms of pump than that illustrated. Vhen the pump is used in a `well, as illustrated in Fig. l, we preferably secure to the outer casing, a strainer 56, which is spaced away from the side of the casing. This st 'ainer serves not only to prevent the admission of solid bodies to the pump, but it also serves to prevent the port from coming against the side of the well. In place of this strainer, a suitable spieler may be employed for securing the last-mentioned result. The strainer', as shown, is substantially cylindrical in torni and is mounted eccentrically in regard to the casing. t

Various changes may be made in the details of construction without departing from the spirit of our invention. For instance, the water and air pump cylinders may be made of different diameter dependent upon the height to which the water is to be raisedand the amount of available air pressure.

Having thus described our invention, we claim as new and desire to secure by Letters Patent:

l. A pump including a stand pipe, a water cylinder therein, an air cylinder therein, rigidly connected pistons within' said cylinders, and means for delivering air to said air cylinder to reciprocate the two pistons, said water cylinder having` an admission port leading from outside of the stand pipe and a discharge port delivering into the stand pipe, the exhaust air from said air cylinder discharging into said stand pipe.

2. In combination, a stand pipe having the lower portion thereof constituting a casing, an air cylinder within said casing, a water cylinder within said casing, separate pistons within said cylinders, a piston rod connecting said pistons, an air delivery pipe leading to both ends of said air cylinder, and means operated by the reciprocation of said pistons for controlling the admission of air to the air cylinder and the exhaust ot' air from said air cylinder' to the casing, said water cylinder having an inlet communication with the space outside of the casing and having an outlet delivering into the easing.

3. In combination, a stand pipe having the lower portion thereof constituting a casing, an air cylinder wit-hin said casing, a water cylinder within said casino. separate pistons within said cylinders, a piston rod connecting said pistons, an air delivery pipe leading to both ends of said air cylinder,

means operated by the reciprocation of said pistons tor mmtrollmg the admission of an' .to the air cylinder said water c linucr having an inlet connuunication with the space outside of the casino' and having an outlet delivering into the casino', and the outlet trom said air cylinder also delivering to said casing.

4t. In combination, a stand pipe, a pump disposed therein adjacent the lower end, an air pipe leading down said stand pipe to said pump for operating the latter, the pump operating to take in water from outside the stand pipe and discharging the same into the stand pipe, and the exhaust air from said pump being also discharged into said stand pipe.

5. In combination, a stand pipe, an air cylinder and a water cylinder therein and both rigidly secured thereto in alinement with each other and eccentric in respect to the stand pipe, rigidly-comiected pistons within said cylinders. the air cylinderl having ports adjacent its opposite ends and serving alternately as inlet and exhaust ports, means for delivering air to said air cylinder for operating said pistons, and means for connecting the port serving as the air exhaust port with said stand pipe, said water cylinder having a suction port receiving water from outside said stand pipe and having a discharge port delivering into said stand pipe.

6. In combination, a stand pipe, a water cylinder and an air cylinder therein in alinement with each other and eccentric in respect to the stand pipe, an air pipe extending down said stand pipe to the air cylinder, a hollow valve stem extending lengthwise of said air cylinder and having ports connnunicating with opposite ends of the air cylinder, and means for rotating said valve stem to control the admission and exhaust of air to and from said air cylinder, the said exhaust being delivered to said stand pipe.

7. In combination, a stand pipe, a water cylinder and an air cylinder therein in alinement with each other and eccentric in respect to the stand pipe, an air pipe extending down said stand pipe to the air cylinder, a hollow valve stem extending lengthwise of said air cylinder and having ports communicating with opposite ends of the air cylinder, and means controlled by the reciprocation ot' said pistons for controlling the admission ot' air ilrom said air pipe to said air cylinder, and the exhaust of air from said air cylinder to said stand pipe.

8'. In combination, a stand pipe, a water cylinder and an air cylinder therein in alinement with each other and eccentric in respect to the stand pipe, an air pipe extending down said stand pipe to the air cylinder, a hollow valve stem extending lengthwise of said air cylinder and having ports communicating with opposite ends of the air cylinder, and means controlled by the ref cipro-cation of said pistons for controlling the admission of air from said air pipe to said air cylinder and the exhaust of air from said air cylinder to said stand pipe, and said water cylinder having a suction port receiving water from outside of said stand pipe, and having a discharge port delivering water into said stand pipe.

9. In combination, a stand pipe, and a pump located therein adjacent the lower end thereof, said pump including an air cylinder, a water cylinder, rigidly-connected pistons, and means for controlling the admission of air to said air cylinder, said water cylinder having discharge ports at each end thereof, and an inlet port intermediate the ends, and the piston in said water cylinder being hollow and having the interior thereof in open communication with said inlet port andI having discharge ports at each end thereof through which the water may pass into the end portions of the cylinder.

l0. A pump including a cylinder having discharge ports at each end thereof and an inlet port intermediate the ends, and a -piston within said cylinder and having two piston heads disposed upon opposite sides of said inlet port and each having a port therethrough controlled by a spring-pressed outwardly-opening valve.

l1. A pump having an air cylinder provided with a port adjacent each end thereof, a valve casing covering said port and having a discharge port, a hollow valve stem extending lengthwisev of the cylinder and into both of said valve casings, and having at each end thereof, a' port for delivering air from the interior of the valve stem to the port of the cylinder, and having a by-pass for establishing communication between the corresponding port of the cylinder and the outlet port of t-he casing, and means controlled by the reciprocation of the pump piston for rotating said valve stem.

l2. A pump having an air cylinder provided with a port adjacent each end thereof, a valve casing covering said port and having a discharge port, a hollow valve stem extending lengthwise of the cylinder and into both of said valve casings, and having at each end thereof, a port for delivering air from the interior of the valve stem to the port of the cylinder, and having a by-pass for establishing communication between the corresponding port of the cylinder and the outlet port of the casing, means controlled by the reciprocation of the pump piston for rotating said valve stem, and means for delivering air to one of said valve casings and the interior of said valve stem.

In testimony whereof we have signed our names to this specification in the presence of two subscribing witnesses.

PAUL S. A. BICKEL. FRANK C. PIERCE.

itnesses T. PLATT WILLIAMS, E. H. MILES. 

